Haha, a moon pie! I’m not sure where the dividing line is, for calling them moon pies or whoopie pies. I lived in Connecticut until I was 12 so I think New England might be moon pie land.
Oh hold on! I looked again and yours is a bit different than the chocolate covered one I am thinking of! Though I still don’t remember hearing “whoopie pie” when I was little. Apparently I was deprived! I have seen these softer and gentler kind in bakeries since then. It’s true they are delicious!